Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Gamma aluminum oxide crystal form transformation preparation method
The invention relates to a preparation method of gamma aluminum oxide through crystal form transformation. The mixture is subjected to ball milling for 12 h at the speed of 250 r/min and calcined under the condition of heat preservation for 5 h at the temperature of 1150 DEG C, and gamma-Al2O3 is converted into alpha-Al2O3 powder through two steps. The two-step method of ball milling and calcination is adopted, the time is shorter than that of single ball milling, the material granularity is small, alpha-Al2O3 powder seed crystal is introduced, and the calcination temperature is reduced through the two modes.
本发明涉及一种伽马氧化铝晶型转变的制备方法。将混合料以250转/分球磨12h和在1150℃下保温5h条件下煅烧，两步将γ‑Al2O3转为α‑Al2O3粉体。本发明采用球磨和煅烧两步法，比单一球磨时间短，物料粒度小以及引入α‑Al2O3粉体晶种，两种方式降低煅烧温度。
Gamma aluminum oxide crystal form transformation preparation method
The invention relates to a preparation method of gamma aluminum oxide through crystal form transformation. The mixture is subjected to ball milling for 12 h at the speed of 250 r/min and calcined under the condition of heat preservation for 5 h at the temperature of 1150 DEG C, and gamma-Al2O3 is converted into alpha-Al2O3 powder through two steps. The two-step method of ball milling and calcination is adopted, the time is shorter than that of single ball milling, the material granularity is small, alpha-Al2O3 powder seed crystal is introduced, and the calcination temperature is reduced through the two modes.
本发明涉及一种伽马氧化铝晶型转变的制备方法。将混合料以250转/分球磨12h和在1150℃下保温5h条件下煅烧，两步将γ‑Al2O3转为α‑Al2O3粉体。本发明采用球磨和煅烧两步法，比单一球磨时间短，物料粒度小以及引入α‑Al2O3粉体晶种，两种方式降低煅烧温度。
Gamma aluminum oxide crystal form transformation preparation method
一种伽马氧化铝晶型转变的制备方法
YANG XIAOHONG (Autor:in) / LI MIN (Autor:in) / CHEN JIANBING (Autor:in)
28.03.2023
Patent
Elektronische Ressource
Chinesisch
IPC:
C04B
Kalk
,
LIME
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